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Date: Sat, 12 May 2007 08:18:50 -0700
From: "James Strachan" <james.strachan@gmail.com>
To: users@activemq.apache.org
Subject: Re: Activemq - out of memory problem
In-Reply-To: <10429740.post@talk.nabble.com>
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References: <10429740.post@talk.nabble.com>

On 5/11/07, fiwolfa <tomaszgieszczyk6@wp.pl> wrote:
>
> Hi
>
> I use activemq inside servicemix 3.1 with mysql 5.0 (memor for servicemix is
> set to 1GB). I set usageMemory limit to 128 MB and my messages are about 2mb
> big. I put to my app many messages at the same time, about 25, they work
> without any problem for few minutes but after that i get error:
> ActiveMQMessage | error dispatchig message: java.lang.OutOfMemoryError: Java
> heap space
>
> What can be the reason of that? I uploaded two config files activemq.xml and
> tx.xml
> Please help

Some background....

http://activemq.apache.org/what-is-the-prefetch-limit-for.html

I'd set your prefetch to something pretty small (say 2) if you are
using such big messages (since by default the JMS client will keep in
RAM a few thousand messages). Also run the ActiveMQ broker in a
separate JVM then you know which JVM is actually running out of memory
etc


-- 
James
-------
http://macstrac.blogspot.com/